Improvement in burring-machines



UNITED STATES PATENT OFFICE.

ALANSO CRANE, OF LOWELL, MASSACHUSETTS.

IMPROVEMENT IN BURRING-MACHINES.

Specification forming part of Letters Patent No. 4,231, dated October l1, 1845.

A description thereof. p

In its general construction my improved burring and cleaning machine resembles such as have been before known and used, and more particularly that for which Letters Pat-- ent of the United States were granted to me and to 'William W. Calvert on the 16th day'of July, in the year 1841.

My principal improvement in this machine consists in the manner in which I construct the line-comb cylinder, which, as heretofore made, has not possessed the desired permanence, and has been defective in other respects.

In the accompanying drawings, Figure lis a top view, and Fig. 2 a vertical longitudinal section through the center of my machine. Fig. 3 represents a top and Fig. 4L an edge view of one of the steel or iron segment-plates which form the peripheryof the fine-comb cylinder, the two last figures being'drawn to a larger scale than the two former.

A is the endless apron by which the feeding lis effected.

B B are the feeding-rollers.

C is the picker-cylinder,which receives the wool or cotton from the feeding-rollers and carries it down over the grating a a.

D is the guard or beating roller, the nature and operation of which are the same with that described in the Letters Patent above referred to.

E is the fine-comb cylinder, and F the body thereof.

Gis the doffer or brush cylinder, which removes the cleaned wool or cotton from the ne-comb cylinder.

The fine-comb cylinder I form in the following manner: I take such number of plates of steel or of iron of 'proper length and width as there are to be combs on the cylinder, and these I bend widthwise, so as to adapt them to the curvature of the wooden or other cylindrical body of which they are to form the periphery. I then attach them thereto by screws or otherwise and turn their faces perfectly true. I also cut channels or grooves around them at such distance apart as shall equal that of the intended line-comb teeth, which may be an eighth of an inch, more or less. These channels are shown on the plates 'b b b. In Fig. 3 they are represented of the full size of those in use, or somewhat larger. The edges c of these plates on which the teeth are to be formed are chamfered as shown at c, Fig. 4, and the opposite edges as shown at d. The teeth are then finished by ling between them when they are affixed to the cylinder. 'Ihe small space left between their edges enables the teeth to lay hold on the fibers of wool or cotton as they are brought up to them by the picker-cylinder.' The channels formed around the fine-comb cylinder not only enable me to form the comb-teethin the most advantageous manner from the solid plates of metal, but they receive within them a large portion of the bers of the material that is being cleaned, and consequently allow the burrs and motes to' be beaten off by the beatingroller more effectually than when the whole of the bers are exposed. The wool or cotton is likewise more effectually protected from having its fibers broken than upon any other plan of forming the fine-comb cylinder.

Having thus fully described the nature of my improvement in the manner of constructing the ne-comb cylinder of a machine for the burring and cleaning of wool or cotton, what I claim therein as new, and desire to secure by Letters Patent, is

The constructing of said cylinder by covering its periphery with metallic plates of such width as may be desired, and extending from end to end thereof, on which plates, grooves, or channels are to be cut, and the teeth to be formed on one of their edges, in the manner and for the purpose herein fully made known.

ALANSON CRANE.

Witnesses:

Trios. P. JONES, EDWIN L. BRUNDAGE. 

